1987 Topps Traded vs Topps Tiffany Traded

I'm trying to identify some 1987 topps traded cards I have as either regular topps traded or the tiffany version. I'm not too sure on the glossy thing, anything else I can look at to determine this?
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<< <i>THe base version will have a duller finish. Side by side it will be obvius. On th eback, the base will have the regular grayish stock and the tiffany will have brighter stock. >>
The former (glossy finish) is certainly true. I actually think the latter (white stock) is not, as Topps typically used white stock for its traded sets. Now, it's possible that Topps used gray stock for the 1987 set, but I don't think so. Can anyone else confirm? Either way, you should be able to tell by the glossy finish.